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All results from a given calculation for CH3COOH (Acetic acid)

using model chemistry: MP2/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/aug-cc-pVDZ
 hartrees
Energy at 0K-228.524381
Energy at 298.15K-228.529202
Nuclear repulsion energy120.181460
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3741 3588 70.48      
2 A' 3222 3090 3.30      
3 A' 3090 2964 1.70      
4 A' 1791 1718 280.79      
5 A' 1463 1403 13.49      
6 A' 1403 1346 67.70      
7 A' 1328 1274 23.23      
8 A' 1204 1155 214.53      
9 A' 995 954 64.24      
10 A' 867 832 8.42      
11 A' 577 553 37.00      
12 A' 419 402 3.93      
13 A" 3179 3049 2.52      
14 A" 1469 1409 8.09      
15 A" 1056 1013 4.39      
16 A" 658 631 96.18      
17 A" 551 529 18.47      
18 A" 79 76 0.23      

Unscaled Zero Point Vibrational Energy (zpe) 13547.3 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 12991.9 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2/aug-cc-pVDZ
ABC
0.37012 0.31335 0.17530

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.084 -0.891 0.000
C2 0.000 0.155 0.000
O3 0.161 1.365 0.000
H4 2.064 -0.400 0.000
H5 0.977 -1.531 0.888
H6 0.977 -1.531 -0.888
O7 -1.242 -0.421 0.000
H8 -1.877 0.317 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.50672.43741.09551.10001.10002.37333.1982
C21.50671.22042.13732.14142.14141.36921.8839
O32.43741.22042.59553.13683.13682.27132.2916
H41.09552.13732.59551.80241.80243.30594.0056
H51.10002.14143.13681.80241.77642.63503.5139
H61.10002.14143.13681.80241.77642.63503.5139
O72.37331.36922.27133.30592.63502.63500.9737
H83.19821.88392.29164.00563.51393.51390.9737

picture of Acetic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 126.382 C1 C2 O7 111.138
C2 C1 H4 109.428 C2 C1 H5 109.482
C2 C1 H6 109.482 C2 O7 H8 105.804
O3 C2 O7 122.480 H4 C1 H5 110.363
H4 C1 H6 110.363 H5 C1 H6 107.697
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability